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Home >> Volvo >> 2009 >> C30 R-Design, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 6 Of 8 >> ECM-630D: A/C Relay. Signal Too Low (B5254T3; 2007-2008) >> Signal Too Low >> Checking The Component And Wiring
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Checking The Component And Wiring

Check the signal cable between engine control module (ECM) terminal #B10 (#C10) and air conditioning (A/C) relay terminal #2. Check for a short-circuit to ground.

Remedy as necessary.

Other information 

Fig 1: Identifying VCT2000 Diagnostic Tool Symbol In VIDA (Volvo Scan Tool)
GLL100563Courtesy of VOLVO CARS CORPORATION
Fig 2: Identifying A/C Relay
GLL105199Courtesy of VOLVO CARS CORPORATION